🚨 Stay ahead of invisible threats with smart gas sensing tech!
This 9-piece sensor module set includes MQ-2 through MQ-135 sensors, each capable of detecting harmful gases like ammonia, benzene, and smoke within 10-1000ppm concentration. Featuring dual analog and TTL outputs and operating on a stable 5V DC supply, these compact 32x22x30mm modules are designed for seamless Arduino integration, empowering professionals to build advanced environmental monitoring systems with ease.
T**S
Missing labels, missing sensors
I received 2 sensors missing their labels and one of them is a duplicate MQ-9 so I am lacking an MQ-7. Other than that the sensors operate as expected and match their datasheets for the most part.
A**S
These come with no identification. Retraction
My poor eyes finally found the ID on these. I did,however, get 2 of one and did not get the MQ4.
H**L
What if one is bad?
The mq-7 was defective. I couldn't find any way to contact the seller.
Trustpilot
4 days ago
3 days ago
